Two moles of `NH_(3)` when put into a previously evacuated vessel (one litre) partially dissociate into `N_(2)` and `H_(2)`. If at equilibrium one mole of `NH_(3)` is present, the equilibrium constant is
A
`3//4 mol^(2)litre^(-2)`
B
`27//64 mol^(2) litre^(-2)`
C
`27//32 mol^(2) litre^(-2)`
D
`27//16mol^(2) litre^(-2)`
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The correct Answer is:
d
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